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Figure Caption

Fig. 3 Expression of Candidate Genes in Zebrafish Blood Islands
Whole-embryo in situ hybridization was performed on embryos at 24 hpf.
(A) slc4a1 was used as control to delineate the intermediate cell mass (ICM, indicated by arrows).
(B) Cloche (clo) embryos were used to show specificity of the hybridizations.
(C–H) Candidates identified in this study.

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Acknowledgments
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Reprinted from Cell Metabolism, 10(2), Nilsson, R., Schultz, I.J., Pierce, E.L., Soltis, K.A., Naranuntarat, A., Ward, D.M., Baughman, J.M., Paradkar, P.N., Kingsley, P.D., Culotta, V.C., Kaplan, J., Palis, J., Paw, B.H., and Mootha, V.K., Discovery of genes essential for heme biosynthesis through large-scale gene expression analysis, 119-130, Copyright (2009) with permission from Elsevier. Full text @ Cell Metab.